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<h1>mindsensors-numericpad.h</h1>  </div>
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<div class="contents">
<a href="mindsensors-numericpad_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*!@addtogroup mindsensors</span>
<a name="l00002"></a>00002 <span class="comment"> * @{</span>
<a name="l00003"></a>00003 <span class="comment"> * @defgroup MSNP Numeric Keypad Sensor</span>
<a name="l00004"></a>00004 <span class="comment"> * Numeric Keypad Numeric Keypad Sensor</span>
<a name="l00005"></a>00005 <span class="comment"> * @{</span>
<a name="l00006"></a>00006 <span class="comment"> */</span>
<a name="l00007"></a>00007 
<a name="l00008"></a>00008 <span class="comment">/*</span>
<a name="l00009"></a>00009 <span class="comment"> * $Id: mindsensors-numericpad.h 133 2013-03-10 15:15:38Z xander $</span>
<a name="l00010"></a>00010 <span class="comment"> */</span>
<a name="l00011"></a>00011 
<a name="l00012"></a>00012 <span class="preprocessor">#ifndef __MSNP_H__</span>
<a name="l00013"></a>00013 <span class="preprocessor"></span><span class="preprocessor">#define __MSNP_H__</span>
<a name="l00014"></a>00014 <span class="preprocessor"></span><span class="comment">/** \file mindsensors-numericpad.h</span>
<a name="l00015"></a>00015 <span class="comment"> * \brief Mindsensors Numeric Keypad Sensor driver</span>
<a name="l00016"></a>00016 <span class="comment"> *</span>
<a name="l00017"></a>00017 <span class="comment"> * mindsensors-numericpad.h provides an API for the Mindsensors Numeric Keypad Sensor.\n</span>
<a name="l00018"></a>00018 <span class="comment"> *</span>
<a name="l00019"></a>00019 <span class="comment"> * Changelog:</span>
<a name="l00020"></a>00020 <span class="comment"> * - 0.1: Initial release</span>
<a name="l00021"></a>00021 <span class="comment"> *</span>
<a name="l00022"></a>00022 <span class="comment"> * Credits:</span>
<a name="l00023"></a>00023 <span class="comment"> * - Big thanks to Mindsensors for providing me with the hardware necessary to write and test this.</span>
<a name="l00024"></a>00024 <span class="comment"> *</span>
<a name="l00025"></a>00025 <span class="comment"> * License: You may use this code as you wish, provided you give credit where its due.</span>
<a name="l00026"></a>00026 <span class="comment"> *</span>
<a name="l00027"></a>00027 <span class="comment"> * THIS CODE WILL ONLY WORK WITH ROBOTC VERSION 3.59 AND HIGHER. </span>
<a name="l00028"></a>00028 <span class="comment"></span>
<a name="l00029"></a>00029 <span class="comment"> * \author Xander Soldaat (xander_at_botbench.com)</span>
<a name="l00030"></a>00030 <span class="comment"> * \date 30 October 2010</span>
<a name="l00031"></a>00031 <span class="comment"> * \version 0.1</span>
<a name="l00032"></a>00032 <span class="comment"> * \example mindsensors-numericpad-test1.c</span>
<a name="l00033"></a>00033 <span class="comment"> */</span>
<a name="l00034"></a>00034 
<a name="l00035"></a>00035 <span class="preprocessor">#pragma systemFile</span>
<a name="l00036"></a>00036 <span class="preprocessor"></span>
<a name="l00037"></a>00037 <span class="preprocessor">#ifndef __COMMON_H__</span>
<a name="l00038"></a>00038 <span class="preprocessor"></span><span class="preprocessor">#include &quot;<a class="code" href="common_8h.html" title="Commonly used functions used by drivers.">common.h</a>&quot;</span>
<a name="l00039"></a>00039 <span class="preprocessor">#endif</span>
<a name="l00040"></a>00040 <span class="preprocessor"></span>
<a name="l00041"></a><a class="code" href="group___m_s_n_p.html#ga6472a8d2f87f7d94c7f7e5a1112294c3">00041</a> <span class="preprocessor">#define MSNP_I2C_ADDR  0xB4     </span><span class="comment">/*!&lt; Numeric Pad I2C device address */</span>
<a name="l00042"></a><a class="code" href="group___m_s_n_p.html#gaf9cb9881c29d5169e9c9c653a98da79b">00042</a> <span class="preprocessor">#define MSNP_DATA_REG  0x00     </span><span class="comment">/*!&lt; Data registers start at 0x00 */</span>
<a name="l00043"></a>00043 
<a name="l00044"></a><a class="code" href="group___m_s_n_p.html#gad34725814e9951e32255a0fd938731aa">00044</a> <a class="code" href="group__common.html#gaa172ef131853460e5b9f5c6db81d30f4">tByteArray</a> <a class="code" href="group___m_s_n_p.html#gad34725814e9951e32255a0fd938731aa">MSNP_I2CRequest</a>;     <span class="comment">/*!&lt; Array to hold I2C command data */</span>
<a name="l00045"></a><a class="code" href="group___m_s_n_p.html#ga193e672b81afe32e257e2359d31a2ac1">00045</a> <a class="code" href="group__common.html#gaa172ef131853460e5b9f5c6db81d30f4">tByteArray</a> <a class="code" href="group___m_s_n_p.html#ga193e672b81afe32e257e2359d31a2ac1">MSNP_I2CReply</a>;       <span class="comment">/*!&lt; Array to hold I2C reply data */</span>
<a name="l00046"></a>00046 
<a name="l00047"></a>00047 
<a name="l00048"></a><a class="code" href="group___m_s_n_p.html#ga2ed62e71b3d05ffa351963ebd0a42c34">00048</a> <span class="preprocessor">#define KEY_STATUS_REG 0x00</span>
<a name="l00049"></a>00049 <span class="preprocessor"></span>
<a name="l00050"></a><a class="code" href="group___m_s_n_p.html#ga37e776b5a84409012a54e8fbff3f78fa">00050</a> <span class="keyword">const</span> <span class="keywordtype">unsigned</span> byte <a class="code" href="group___m_s_n_p.html#ga37e776b5a84409012a54e8fbff3f78fa">MSNP_KeyMap</a>[] = { <span class="charliteral">&#39;#&#39;</span>, <span class="charliteral">&#39;9&#39;</span>, <span class="charliteral">&#39;6&#39;</span>, <span class="charliteral">&#39;3&#39;</span>, <span class="charliteral">&#39;0&#39;</span>, <span class="charliteral">&#39;8&#39;</span>, <span class="charliteral">&#39;2&#39;</span>, <span class="charliteral">&#39;5&#39;</span>, <span class="charliteral">&#39;*&#39;</span>, <span class="charliteral">&#39;7&#39;</span>, <span class="charliteral">&#39;1&#39;</span>, <span class="charliteral">&#39;4&#39;</span> };
<a name="l00051"></a><a class="code" href="group___m_s_n_p.html#gad67b4c6d110c73d2976f135cb7bd69ad">00051</a> <span class="keyword">const</span> <span class="keywordtype">signed</span> byte <a class="code" href="group___m_s_n_p.html#gad67b4c6d110c73d2976f135cb7bd69ad">MSNP_NumMap</a>[] = { -1, 9, 6, 3, 0, 8, 2, 5, -2, 7, 1, 4};
<a name="l00052"></a>00052 
<a name="l00053"></a><a class="code" href="group___m_s_n_p.html#gacf5507e6eee1bb61a65ba1a4e1b3ecf1">00053</a> <span class="keyword">const</span> <span class="keywordtype">unsigned</span> byte <a class="code" href="group___m_s_n_p.html#gacf5507e6eee1bb61a65ba1a4e1b3ecf1">MSNP_ConfigGroup1</a>[] = {10, <a class="code" href="group___m_s_n_p.html#ga6472a8d2f87f7d94c7f7e5a1112294c3">MSNP_I2C_ADDR</a>, 0x2B, 0x01, 0x01, 0x00, 0x00, 0x01, 0x01, 0xFF, 0x02};
<a name="l00054"></a><a class="code" href="group___m_s_n_p.html#gad31afc697766e603bb4b0b0a517952a3">00054</a> <span class="keyword">const</span> <span class="keywordtype">unsigned</span> byte <a class="code" href="group___m_s_n_p.html#gad31afc697766e603bb4b0b0a517952a3">MSNP_ConfigGroup2</a>[] = {16, <a class="code" href="group___m_s_n_p.html#ga6472a8d2f87f7d94c7f7e5a1112294c3">MSNP_I2C_ADDR</a>, 0x41, 0x0F, 0x0A, 0x0F, 0x0A, 0x0F, 0x0A, 0x0F, 0x0A, 0x0F, 0x0A, 0x0F, 0x0A, 0x0F, 0x0A};
<a name="l00055"></a><a class="code" href="group___m_s_n_p.html#ga2996b9ebe7e38ead69d12e8279953c9c">00055</a> <span class="keyword">const</span> <span class="keywordtype">unsigned</span> byte <a class="code" href="group___m_s_n_p.html#ga2996b9ebe7e38ead69d12e8279953c9c">MSNP_ConfigGroup3</a>[] = {14, <a class="code" href="group___m_s_n_p.html#ga6472a8d2f87f7d94c7f7e5a1112294c3">MSNP_I2C_ADDR</a>, 0x4F, 0x0F, 0x0A, 0x0F, 0x0A, 0x0F, 0x0A, 0x0F, 0x0A, 0x0F, 0x0A, 0x0F, 0x0A};
<a name="l00056"></a><a class="code" href="group___m_s_n_p.html#ga4d7ec0466ee7de80fe4f3ef26df3dcb7">00056</a> <span class="keyword">const</span> <span class="keywordtype">unsigned</span> byte <a class="code" href="group___m_s_n_p.html#ga4d7ec0466ee7de80fe4f3ef26df3dcb7">MSNP_ConfigGroup4</a>[] = { 5, <a class="code" href="group___m_s_n_p.html#ga6472a8d2f87f7d94c7f7e5a1112294c3">MSNP_I2C_ADDR</a>, 0x5C, 0x0B, 0x20, 0x0C};
<a name="l00057"></a><a class="code" href="group___m_s_n_p.html#ga7e4262f1f594f011f63dab24fdf0927d">00057</a> <span class="keyword">const</span> <span class="keywordtype">unsigned</span> byte <a class="code" href="group___m_s_n_p.html#ga7e4262f1f594f011f63dab24fdf0927d">MSNP_ConfigGroup5</a>[] = { 3, <a class="code" href="group___m_s_n_p.html#ga6472a8d2f87f7d94c7f7e5a1112294c3">MSNP_I2C_ADDR</a>, 0x7B, 0x0B};
<a name="l00058"></a><a class="code" href="group___m_s_n_p.html#ga92e4936678304dbb1d5f1a8e7b5ac2b0">00058</a> <span class="keyword">const</span> <span class="keywordtype">unsigned</span> byte <a class="code" href="group___m_s_n_p.html#ga92e4936678304dbb1d5f1a8e7b5ac2b0">MSNP_ConfigGroup6</a>[] = { 5, <a class="code" href="group___m_s_n_p.html#ga6472a8d2f87f7d94c7f7e5a1112294c3">MSNP_I2C_ADDR</a>, 0x7D, 0x9C, 0x65, 0x8C};
<a name="l00059"></a>00059 
<a name="l00060"></a><a class="code" href="group___m_s_n_p.html#ga5f48314dd362d5eb1047ea3512d2185e">00060</a> <span class="keywordtype">bool</span> <a class="code" href="group___m_s_n_p.html#ga5f48314dd362d5eb1047ea3512d2185e">_MSNPinitialised</a>[] = {<span class="keyword">false</span>, <span class="keyword">false</span>, <span class="keyword">false</span>, <span class="keyword">false</span>};
<a name="l00061"></a>00061 
<a name="l00062"></a>00062 <span class="comment"></span>
<a name="l00063"></a>00063 <span class="comment">/**</span>
<a name="l00064"></a>00064 <span class="comment"> * Initialise the numeric pad sensor chip.  This must be done at the beginning</span>
<a name="l00065"></a>00065 <span class="comment"> * of every power cycle\n</span>
<a name="l00066"></a>00066 <span class="comment"> * Note: this is an internal function and should not be called directly.</span>
<a name="l00067"></a>00067 <span class="comment"> * @param link the MSNP port number</span>
<a name="l00068"></a>00068 <span class="comment"> * @return true if no error occured, false if it did</span>
<a name="l00069"></a>00069 <span class="comment"> */</span>
<a name="l00070"></a><a class="code" href="group___m_s_n_p.html#ga84a1752785d3c14b646d4250d1d7975c">00070</a> <span class="keywordtype">bool</span> <a class="code" href="group___m_s_n_p.html#ga84a1752785d3c14b646d4250d1d7975c">_MSNPinit</a>(tSensors link) {
<a name="l00071"></a>00071 <span class="comment">// Must be called at the beginning of every power cycle</span>
<a name="l00072"></a>00072 
<a name="l00073"></a>00073   memcpy(<a class="code" href="group___m_s_n_p.html#gad34725814e9951e32255a0fd938731aa">MSNP_I2CRequest</a>, <a class="code" href="group___m_s_n_p.html#gacf5507e6eee1bb61a65ba1a4e1b3ecf1">MSNP_ConfigGroup1</a>, <span class="keyword">sizeof</span>(<a class="code" href="group___m_s_n_p.html#gacf5507e6eee1bb61a65ba1a4e1b3ecf1">MSNP_ConfigGroup1</a>));
<a name="l00074"></a>00074   <span class="keywordflow">if</span> (!<a class="code" href="group__common.html#gad02e06f83b264ee6fc7df41eb4712080">writeI2C</a>(link, <a class="code" href="group___m_s_n_p.html#gad34725814e9951e32255a0fd938731aa">MSNP_I2CRequest</a>))
<a name="l00075"></a>00075     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00076"></a>00076 
<a name="l00077"></a>00077   memcpy(<a class="code" href="group___m_s_n_p.html#gad34725814e9951e32255a0fd938731aa">MSNP_I2CRequest</a>, <a class="code" href="group___m_s_n_p.html#gad31afc697766e603bb4b0b0a517952a3">MSNP_ConfigGroup2</a>, <span class="keyword">sizeof</span>(<a class="code" href="group___m_s_n_p.html#gad31afc697766e603bb4b0b0a517952a3">MSNP_ConfigGroup2</a>));
<a name="l00078"></a>00078   <span class="keywordflow">if</span> (!<a class="code" href="group__common.html#gad02e06f83b264ee6fc7df41eb4712080">writeI2C</a>(link, <a class="code" href="group___m_s_n_p.html#gad34725814e9951e32255a0fd938731aa">MSNP_I2CRequest</a>))
<a name="l00079"></a>00079     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00080"></a>00080 
<a name="l00081"></a>00081   memcpy(<a class="code" href="group___m_s_n_p.html#gad34725814e9951e32255a0fd938731aa">MSNP_I2CRequest</a>, <a class="code" href="group___m_s_n_p.html#ga2996b9ebe7e38ead69d12e8279953c9c">MSNP_ConfigGroup3</a>, <span class="keyword">sizeof</span>(<a class="code" href="group___m_s_n_p.html#ga2996b9ebe7e38ead69d12e8279953c9c">MSNP_ConfigGroup3</a>));
<a name="l00082"></a>00082   <span class="keywordflow">if</span> (!<a class="code" href="group__common.html#gad02e06f83b264ee6fc7df41eb4712080">writeI2C</a>(link, <a class="code" href="group___m_s_n_p.html#gad34725814e9951e32255a0fd938731aa">MSNP_I2CRequest</a>))
<a name="l00083"></a>00083     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00084"></a>00084 
<a name="l00085"></a>00085   memcpy(<a class="code" href="group___m_s_n_p.html#gad34725814e9951e32255a0fd938731aa">MSNP_I2CRequest</a>, <a class="code" href="group___m_s_n_p.html#ga4d7ec0466ee7de80fe4f3ef26df3dcb7">MSNP_ConfigGroup4</a>, <span class="keyword">sizeof</span>(<a class="code" href="group___m_s_n_p.html#ga4d7ec0466ee7de80fe4f3ef26df3dcb7">MSNP_ConfigGroup4</a>));
<a name="l00086"></a>00086   <span class="keywordflow">if</span> (!<a class="code" href="group__common.html#gad02e06f83b264ee6fc7df41eb4712080">writeI2C</a>(link, <a class="code" href="group___m_s_n_p.html#gad34725814e9951e32255a0fd938731aa">MSNP_I2CRequest</a>))
<a name="l00087"></a>00087     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00088"></a>00088 
<a name="l00089"></a>00089   memcpy(<a class="code" href="group___m_s_n_p.html#gad34725814e9951e32255a0fd938731aa">MSNP_I2CRequest</a>, <a class="code" href="group___m_s_n_p.html#ga7e4262f1f594f011f63dab24fdf0927d">MSNP_ConfigGroup5</a>, <span class="keyword">sizeof</span>(<a class="code" href="group___m_s_n_p.html#ga7e4262f1f594f011f63dab24fdf0927d">MSNP_ConfigGroup5</a>));
<a name="l00090"></a>00090   <span class="keywordflow">if</span> (!<a class="code" href="group__common.html#gad02e06f83b264ee6fc7df41eb4712080">writeI2C</a>(link, <a class="code" href="group___m_s_n_p.html#gad34725814e9951e32255a0fd938731aa">MSNP_I2CRequest</a>))
<a name="l00091"></a>00091     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00092"></a>00092 
<a name="l00093"></a>00093   memcpy(<a class="code" href="group___m_s_n_p.html#gad34725814e9951e32255a0fd938731aa">MSNP_I2CRequest</a>, <a class="code" href="group___m_s_n_p.html#ga92e4936678304dbb1d5f1a8e7b5ac2b0">MSNP_ConfigGroup6</a>, <span class="keyword">sizeof</span>(<a class="code" href="group___m_s_n_p.html#ga92e4936678304dbb1d5f1a8e7b5ac2b0">MSNP_ConfigGroup6</a>));
<a name="l00094"></a>00094   <span class="keywordflow">if</span> (!<a class="code" href="group__common.html#gad02e06f83b264ee6fc7df41eb4712080">writeI2C</a>(link, <a class="code" href="group___m_s_n_p.html#gad34725814e9951e32255a0fd938731aa">MSNP_I2CRequest</a>))
<a name="l00095"></a>00095     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00096"></a>00096 
<a name="l00097"></a>00097   <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00098"></a>00098 }
<a name="l00099"></a>00099 
<a name="l00100"></a>00100 <span class="comment"></span>
<a name="l00101"></a>00101 <span class="comment">/**</span>
<a name="l00102"></a>00102 <span class="comment"> * Scan the keypad for pressed keys.  This returns immediately.</span>
<a name="l00103"></a>00103 <span class="comment"> * @param link the MSNP port number</span>
<a name="l00104"></a>00104 <span class="comment"> * @param pressedKeys a binary representation of all keys pressed</span>
<a name="l00105"></a>00105 <span class="comment"> * @param key character representation of the first key pressed, X if no key was pressed</span>
<a name="l00106"></a>00106 <span class="comment"> * @param number the numeric equivalent, 0-9 for digits, -1 for # and -2 for *, -255 when nothing is pressed</span>
<a name="l00107"></a>00107 <span class="comment"> * @return true if no error occured, false if it did</span>
<a name="l00108"></a>00108 <span class="comment"> */</span>
<a name="l00109"></a><a class="code" href="group___m_s_n_p.html#ga570a8c02a43793224da780b820d9d4b9">00109</a> <span class="keywordtype">bool</span> <a class="code" href="group___m_s_n_p.html#ga570a8c02a43793224da780b820d9d4b9">MSNPscanKeys</a>(tSensors link, <span class="keywordtype">int</span> &amp;pressedKeys, <span class="keywordtype">unsigned</span> byte &amp;key, <span class="keywordtype">int</span> &amp;number) {
<a name="l00110"></a>00110   <span class="comment">//int keyPress = 0;</span>
<a name="l00111"></a>00111 
<a name="l00112"></a>00112   <span class="keywordflow">if</span> (!<a class="code" href="group___m_s_n_p.html#ga5f48314dd362d5eb1047ea3512d2185e">_MSNPinitialised</a>[link]) {
<a name="l00113"></a>00113     <a class="code" href="group___m_s_n_p.html#ga84a1752785d3c14b646d4250d1d7975c">_MSNPinit</a>(link);
<a name="l00114"></a>00114     <a class="code" href="group___m_s_n_p.html#ga5f48314dd362d5eb1047ea3512d2185e">_MSNPinitialised</a>[link] = <span class="keyword">true</span>;
<a name="l00115"></a>00115     wait1Msec(10);
<a name="l00116"></a>00116   }
<a name="l00117"></a>00117 
<a name="l00118"></a>00118   key = <span class="charliteral">&#39;X&#39;</span>;
<a name="l00119"></a>00119   number = -255;
<a name="l00120"></a>00120 
<a name="l00121"></a>00121   <a class="code" href="group___m_s_n_p.html#gad34725814e9951e32255a0fd938731aa">MSNP_I2CRequest</a>[0] = 2;
<a name="l00122"></a>00122   <a class="code" href="group___m_s_n_p.html#gad34725814e9951e32255a0fd938731aa">MSNP_I2CRequest</a>[1] = <a class="code" href="group___m_s_n_p.html#ga6472a8d2f87f7d94c7f7e5a1112294c3">MSNP_I2C_ADDR</a>;
<a name="l00123"></a>00123   <a class="code" href="group___m_s_n_p.html#gad34725814e9951e32255a0fd938731aa">MSNP_I2CRequest</a>[2] = <a class="code" href="group___m_s_n_p.html#gaf9cb9881c29d5169e9c9c653a98da79b">MSNP_DATA_REG</a>;
<a name="l00124"></a>00124 
<a name="l00125"></a>00125         <span class="keywordflow">if</span> (!<a class="code" href="group__common.html#gad02e06f83b264ee6fc7df41eb4712080">writeI2C</a>(link, <a class="code" href="group___m_s_n_p.html#gad34725814e9951e32255a0fd938731aa">MSNP_I2CRequest</a>, <a class="code" href="group___m_s_n_p.html#ga193e672b81afe32e257e2359d31a2ac1">MSNP_I2CReply</a>, 2))
<a name="l00126"></a>00126           <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00127"></a>00127 
<a name="l00128"></a>00128   pressedKeys = <a class="code" href="group___m_s_n_p.html#ga193e672b81afe32e257e2359d31a2ac1">MSNP_I2CReply</a>[0] + (<a class="code" href="group___m_s_n_p.html#ga193e672b81afe32e257e2359d31a2ac1">MSNP_I2CReply</a>[1] * 256);
<a name="l00129"></a>00129 
<a name="l00130"></a>00130         <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i &lt; 12; i++) {
<a name="l00131"></a>00131           <span class="keywordflow">if</span> (pressedKeys &amp; (1&lt;&lt;i)) {
<a name="l00132"></a>00132             key = <a class="code" href="group___m_s_n_p.html#ga37e776b5a84409012a54e8fbff3f78fa">MSNP_KeyMap</a>[i];
<a name="l00133"></a>00133             number = <a class="code" href="group___m_s_n_p.html#gad67b4c6d110c73d2976f135cb7bd69ad">MSNP_NumMap</a>[i];
<a name="l00134"></a>00134             <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00135"></a>00135           }
<a name="l00136"></a>00136         }
<a name="l00137"></a>00137 
<a name="l00138"></a>00138         <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00139"></a>00139 }
<a name="l00140"></a>00140 
<a name="l00141"></a>00141 <span class="comment"></span>
<a name="l00142"></a>00142 <span class="comment">/**</span>
<a name="l00143"></a>00143 <span class="comment"> * Scan the keypad for pressed keys.  This returns immediately.</span>
<a name="l00144"></a>00144 <span class="comment"> * @param link the MSNP port number</span>
<a name="l00145"></a>00145 <span class="comment"> * @return number the numeric equivalent, 0-9 for digits, -1 for # and -2 for *, -255 when nothing is pressed</span>
<a name="l00146"></a>00146 <span class="comment"> */</span>
<a name="l00147"></a><a class="code" href="group___m_s_n_p.html#ga86966fc99b623339144322c3835d1e7b">00147</a> <span class="keywordtype">int</span> <a class="code" href="group___m_s_n_p.html#ga570a8c02a43793224da780b820d9d4b9">MSNPscanKeys</a>(tSensors link) {
<a name="l00148"></a>00148   <span class="keywordtype">int</span> keyPress = 0;
<a name="l00149"></a>00149 
<a name="l00150"></a>00150   <span class="keywordflow">if</span> (!<a class="code" href="group___m_s_n_p.html#ga5f48314dd362d5eb1047ea3512d2185e">_MSNPinitialised</a>[link]) {
<a name="l00151"></a>00151     <a class="code" href="group___m_s_n_p.html#ga84a1752785d3c14b646d4250d1d7975c">_MSNPinit</a>(link);
<a name="l00152"></a>00152     <a class="code" href="group___m_s_n_p.html#ga5f48314dd362d5eb1047ea3512d2185e">_MSNPinitialised</a>[link] = <span class="keyword">true</span>;
<a name="l00153"></a>00153     wait1Msec(10);
<a name="l00154"></a>00154   }
<a name="l00155"></a>00155 
<a name="l00156"></a>00156 
<a name="l00157"></a>00157   <a class="code" href="group___m_s_n_p.html#gad34725814e9951e32255a0fd938731aa">MSNP_I2CRequest</a>[0] = 2;
<a name="l00158"></a>00158   <a class="code" href="group___m_s_n_p.html#gad34725814e9951e32255a0fd938731aa">MSNP_I2CRequest</a>[1] = <a class="code" href="group___m_s_n_p.html#ga6472a8d2f87f7d94c7f7e5a1112294c3">MSNP_I2C_ADDR</a>;
<a name="l00159"></a>00159   <a class="code" href="group___m_s_n_p.html#gad34725814e9951e32255a0fd938731aa">MSNP_I2CRequest</a>[2] = <a class="code" href="group___m_s_n_p.html#gaf9cb9881c29d5169e9c9c653a98da79b">MSNP_DATA_REG</a>;
<a name="l00160"></a>00160 
<a name="l00161"></a>00161         <span class="keywordflow">if</span> (!<a class="code" href="group__common.html#gad02e06f83b264ee6fc7df41eb4712080">writeI2C</a>(link, <a class="code" href="group___m_s_n_p.html#gad34725814e9951e32255a0fd938731aa">MSNP_I2CRequest</a>, <a class="code" href="group___m_s_n_p.html#ga193e672b81afe32e257e2359d31a2ac1">MSNP_I2CReply</a>, 2))
<a name="l00162"></a>00162           <span class="keywordflow">return</span> -255;
<a name="l00163"></a>00163 
<a name="l00164"></a>00164   keyPress = <a class="code" href="group___m_s_n_p.html#ga193e672b81afe32e257e2359d31a2ac1">MSNP_I2CReply</a>[0] + (<a class="code" href="group___m_s_n_p.html#ga193e672b81afe32e257e2359d31a2ac1">MSNP_I2CReply</a>[1] * 256);
<a name="l00165"></a>00165 
<a name="l00166"></a>00166         <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i &lt; 12; i++) {
<a name="l00167"></a>00167           <span class="keywordflow">if</span> (keyPress &amp; (1&lt;&lt;i)) {
<a name="l00168"></a>00168             <span class="keywordflow">return</span> <a class="code" href="group___m_s_n_p.html#gad67b4c6d110c73d2976f135cb7bd69ad">MSNP_NumMap</a>[i];
<a name="l00169"></a>00169           }
<a name="l00170"></a>00170         }
<a name="l00171"></a>00171 
<a name="l00172"></a>00172         <span class="keywordflow">return</span> -255;
<a name="l00173"></a>00173 }
<a name="l00174"></a>00174 
<a name="l00175"></a>00175 
<a name="l00176"></a>00176 <span class="preprocessor">#endif // __MSNP_H__</span>
<a name="l00177"></a>00177 <span class="preprocessor"></span>
<a name="l00178"></a>00178 <span class="comment">/*</span>
<a name="l00179"></a>00179 <span class="comment"> * $Id: mindsensors-numericpad.h 133 2013-03-10 15:15:38Z xander $</span>
<a name="l00180"></a>00180 <span class="comment"> */</span>
<a name="l00181"></a>00181 <span class="comment">/* @} */</span>
<a name="l00182"></a>00182 <span class="comment">/* @} */</span>
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